You were born to be a sacrifice. When you first exited your mothers womb the oracles decided that would be your fate. They tattooed your hands and forehead so everyone would know.
When you turn twenty, they'll take you to the church, and they'll set you on fire. And then when your body is burned they'll give your ashes for the angels, and the angels and saints will be proud, and bless your community and family with great riches. Or at least that's what they say.
When you were young it didn't seem to mean anything that you were born to die young. Nobody cared, they just saw you as another kid. But it was always there. Adults would ask other kids what they wanted to be when they grew up, but they'd ask you what you would do once you were a ruler in the court of heaven. They'd tell other kids about marriage and sex and having children, but for you that would just be for other people, you'd die a virgin.
And at a certain age, you were removed from school. Because they said you wouldn't need it. That you shouldn't be wasting your time on such things. And you didn't understand, but you understood that all your freinds were upset that they wouldn't see you anymore. Not as much at least. And people talked about you so much differently from then on. You weren't complimented as strong, or as smart, or as ambitious, you were pretty, and pure, and brave, and dutiful. And everyone talked about how proud they were of you, how wonderful it was that you were going to die for them.
They were so nice to you. They gave you so many gifts and jewelry. You got to spend all day inside playing video games, and you got the best toys and got to go to movies and plays when you wanted to. Soldiers in power armor would bow when they saw you, and robots and cyborgs would turn off their lights. And you sat at a special place in church, and the clothing you wore was diffrent then everyone else's. And people talked about how wonderful you were, and how pretty you were, and how much they loved having you when they knew you wouldn't be on this world for long. And they were so proud of you when they showed you the platinum clothing you would wear on the day of your sacrifice. And you didn't understand why but all of the compliments sounded sad.
As you grew older things changed. The other children went through puberty, but you didn't, they gave you surgery to prevent it, ans told you how pure you were for not producing blood or seed. And you were old enough to understand that you would die, that you would burn, and it would hurt, and that nobody really knew for sure what happened after peopled died. And you saw a sacrifice, and saw the pain they were in, and there weren't any angels, there were only priests watching and chanting, and the smell of burning skin.
Your parents and family started to care much more how you behave. To make sure you're polite. To make sure you're a good sacrifice, who the angels will like. And meanwhile while all your other freinds are going to college, and talking about becoming artists, or starship pilots, or scientists, you know you'll only ever have one ending. But still, everyone loves you, and you don't have responsibilities, but still sometimes you think about how much diffrent life would be if you were born differently.
You've started meeting people who've left the faith, or people who didn't grow up in it, people who believe in diffrent religions or in no religion at all. And your heaven seems less and less certain every day. According to imperial law you're allowed to be sacrificed, but if you choose not to they can't force you. But if you choose not to you can never be a part of your faith again, and your family will be disappointed in you forever. All your family and community, everyone who you ever knew, will consider you a failure, a coward doomed to hell for not going through with what the cosmos planned for you. And all that pride and joy they felt about your fate would be replaced with anger that you never became what they were so happy and proud about you being. You don't think you believe in heaven anymore, but you still might choose to die, if it means they're proud... it's what you're raised to do, you don't know who you'll be if you choose to leave.
Better choose fast darling, it's only a few months away now. You don't want them to be upset.